264 



HEPORT — 1894. 



Arsenic. 



Kayeer and Runge : ' Abhandl. konigl. Akad. Wissensch. zu Berlin,' 1893. 



• See Tin. 



t The spectrum of arsenic shows no lines in the visible spectrum, but between 

 3000-2000, the lines of arsenic, and in particular 228819 and 2009-31, constantly 

 appear as impurities in other metals and in the carbon poles. The lines 228819 and 

 2009-31, given as copper lines {Rc]wi-t, 1893, pp. 397, 398). appear to be due to 

 arsenic. The ,«/?a?-^spectrum of arsenic, on the other hand, shows some fifty lines in 

 the visible portion. 



